Question
Hello! My mother is a carrier of Hepatitis B surface antigen+ , with normal liver function, and she received the Hepatitis B immune globulin injection from 4 to 9 months of pregnancy. Now that my baby is over twenty days old, when is it best for the baby to undergo a Hepatitis B test?
Answer
The baby should receive three doses of the Hepatitis B vaccine and an injection of high-titer Hepatitis B immune globulin after birth, which can protect 90% to 95% of babies from infection with the Hepatitis B virus and provide immunity. Since the mother has a carrier state for Hepatitis B surface antigen+ , it is recommended to have the baby undergo a Hepatitis B five-item test around seven months to one year after birth to confirm whether the baby has been infected with the Hepatitis B virus.